fgrayplot

Calling Sequence

Arguments

This represents a sequence of statements key1=value1, key2=value2,... where key1, key2,... can be one of the following: rect, nax, strf or axesflag and frameflag (see plot2d).

strf,rect,nax

see plot2d.

Description

fgrayplot makes a 2D plot of the surface given by z=f(x,y) on a
grid defined by x and y.
Each rectangle on the grid is filled with a gray or color level depending
on the average value of z on the corners of the rectangle.